SINTESIS KOMPOSIT MATRIKS LOGAM Al/SiC PADA BAHAN REM KERETA API

Abstract

A Train brake block is a part of train component and is used to hold up a train when is needed, there for a reliable brake is required for a giant vehicle such as a train. A clutch train is made from a cast iron and it has some weaknesses such as a short threadbare age, a big mass and also a high salvage value. A1/SiC metal matrix composite used aluminium as a matrix and SiC as a stimulant. Alumunium is heated until it melted then mixes it with SiC filings, and then pours it into a casting mould. KML A1/SiC has a small density i.e. 2,733 g/cm3 for A1/SiC 2 % and 2,728 g/cm3 for A1/SiC 5 % compare to a cast iron which has a 7,228 g/cm3 density there for it lesser the mass of a train brake, in the other hand a less energy is needed to produce KML A1/SiC. KML Al/SiC 2% and 5% is not yet able to replace a cast iron because the composition of Si element which is from SiC powders is not yet accomplish as we expected. When we observed from a micro structure, Si element is not spreading equally because of unperfected mixture of liquid alumunium and SiC filings. To obtain A1/SiC iron matrix composite synthesis result, an expanding examination is needed with a variation A1-SiC Composition. Keywords: A train brake, Metal Matrix Composite, A1/SiC